| 摘要 |
PCT No. PCT/GB91/01158 Sec. 371 Date Jan. 12, 1993 Sec. 102(e) Date Jan. 12, 1993 PCT Filed Jul. 12, 1991.A transfer film for use, for example, with security documents includes a pattern defining layer having concavities defining an inverted relief pattern, and a retaining layer overlying and releasably filling the concavities of the pattern defining layer. The pattern defining layer is removable from the retaining layer to transfer the relief pattern from the pattern defining layer to the retaining layer. |
